<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Pdf
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Html.php 18993 2009-11-15 17:09:16Z alexander $
 */

/** Zend_Pdf_Color */
require_once 'Zend/Pdf/Color.php';


/**
 * HTML color implementation
 *
 * Factory class which vends Zend_Pdf_Color objects from typical HTML
 * representations.
 *
 * @category   Zend
 * @package    Zend_Pdf
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Pdf_Color_Html extends Zend_Pdf_Color
{

	/**
	 * Color
	 *
	 * @var Zend_Pdf_Color
	 */
	private $_color;

	/**
	 * Class constructor.
	 *
	 * @param mixed $color
	 * @throws Zend_Pdf_Exception
	 */
	public function __construct($color)
	{
		$this->_color = self::color($color);
	}


	/**
	 * Instructions, which can be directly inserted into content stream
	 * to switch color.
	 * Color set instructions differ for stroking and nonstroking operations.
	 *
	 * @param boolean $stroking
	 * @return string
	 */
	public function instructions($stroking)
	{
		return $this->_color->instructions($stroking);
	}

	/**
	 * Get color components (color space dependent)
	 *
	 * @return array
	 */
	public function getComponents()
	{
		return $this->_color->getComponents();
	}

	/**
	 * Creates a Zend_Pdf_Color object from the HTML representation.
	 *
	 * @param string $color May either be a hexidecimal number of the form
	 *    #rrggbb or one of the 140 well-known names (black, white, blue, etc.)
	 * @return Zend_Pdf_Color
	 */
	public static function color($color)
	{
		$pattern = '/^#([A-Fa-f0-9]{2})([A-Fa-f0-9]{2})([A-Fa-f0-9]{2})$/';
		if (preg_match($pattern, $color, $matches)) {
			$r = round((hexdec($matches[1]) / 255), 3);
			$g = round((hexdec($matches[2]) / 255), 3);
			$b = round((hexdec($matches[3]) / 255), 3);
			if (($r == $g) && ($g == $b)) {
				require_once 'Zend/Pdf/Color/GrayScale.php';
				return new Zend_Pdf_Color_GrayScale($r);
			} else {
				require_once 'Zend/Pdf/Color/Rgb.php';
				return new Zend_Pdf_Color_Rgb($r, $g, $b);
			}
		} else {
			return Zend_Pdf_Color_Html::namedColor($color);
		}
	}

	/**
	 * Creates a Zend_Pdf_Color object from the named color.
	 *
	 * @param string $color One of the 140 well-known color names (black, white,
	 *    blue, etc.)
	 * @return Zend_Pdf_Color
	 */
	public static function namedColor($color)
	{
		switch (strtolower($color)) {
			case 'aqua':
				$r = 0.0;   $g = 1.0;   $b = 1.0;   break;
			case 'black':
				$r = 0.0;   $g = 0.0;   $b = 0.0;   break;
			case 'blue':
				$r = 0.0;   $g = 0.0;   $b = 1.0;   break;
			case 'fuchsia':
				$r = 1.0;   $g = 0.0;   $b = 1.0;   break;
			case 'gray':
				$r = 0.502; $g = 0.502; $b = 0.502; break;
			case 'green':
				$r = 0.0;   $g = 0.502; $b = 0.0;   break;
			case 'lime':
				$r = 0.0;   $g = 1.0;   $b = 0.0;   break;
			case 'maroon':
				$r = 0.502; $g = 0.0;   $b = 0.0;   break;
			case 'navy':
				$r = 0.0;   $g = 0.0;   $b = 0.502; break;
			case 'olive':
				$r = 0.502; $g = 0.502; $b = 0.0;   break;
			case 'purple':
				$r = 0.502; $g = 0.0;   $b = 0.502; break;
			case 'red':
				$r = 1.0;   $g = 0.0;   $b = 0.0;   break;
			case 'silver':
				$r = 0.753; $g = 0.753; $b = 0.753; break;
			case 'teal':
				$r = 0.0;   $g = 0.502; $b = 0.502; break;
			case 'white':
				$r = 1.0;   $g = 1.0;   $b = 1.0;   break;
			case 'yellow':
				$r = 1.0;   $g = 1.0;   $b = 0.0;   break;

			case 'aliceblue':
				$r = 0.941; $g = 0.973; $b = 1.0;   break;
			case 'antiquewhite':
				$r = 0.980; $g = 0.922; $b = 0.843; break;
			case 'aquamarine':
				$r = 0.498; $g = 1.0;   $b = 0.831; break;
			case 'azure':
				$r = 0.941; $g = 1.0;   $b = 1.0;   break;
			case 'beige':
				$r = 0.961; $g = 0.961; $b = 0.863; break;
			case 'bisque':
				$r = 1.0;   $g = 0.894; $b = 0.769; break;
			case 'blanchedalmond':
				$r = 1.0;   $g = 1.0;   $b = 0.804; break;
			case 'blueviolet':
				$r = 0.541; $g = 0.169; $b = 0.886; break;
			case 'brown':
				$r = 0.647; $g = 0.165; $b = 0.165; break;
			case 'burlywood':
				$r = 0.871; $g = 0.722; $b = 0.529; break;
			case 'cadetblue':
				$r = 0.373; $g = 0.620; $b = 0.627; break;
			case 'chartreuse':
				$r = 0.498; $g = 1.0;   $b = 0.0;   break;
			case 'chocolate':
				$r = 0.824; $g = 0.412; $b = 0.118; break;
			case 'coral':
				$r = 1.0;   $g = 0.498; $b = 0.314; break;
			case 'cornflowerblue':
				$r = 0.392; $g = 0.584; $b = 0.929; break;
			case 'cornsilk':
				$r = 1.0;   $g = 0.973; $b = 0.863; break;
			case 'crimson':
				$r = 0.863; $g = 0.078; $b = 0.235; break;
			case 'cyan':
				$r = 0.0;   $g = 1.0;   $b = 1.0;   break;
			case 'darkblue':
				$r = 0.0;   $g = 0.0;   $b = 0.545; break;
			case 'darkcyan':
				$r = 0.0;   $g = 0.545; $b = 0.545; break;
			case 'darkgoldenrod':
				$r = 0.722; $g = 0.525; $b = 0.043; break;
			case 'darkgray':
				$r = 0.663; $g = 0.663; $b = 0.663; break;
			case 'darkgreen':
				$r = 0.0;   $g = 0.392; $b = 0.0;   break;
			case 'darkkhaki':
				$r = 0.741; $g = 0.718; $b = 0.420; break;
			case 'darkmagenta':
				$r = 0.545; $g = 0.0;   $b = 0.545; break;
			case 'darkolivegreen':
				$r = 0.333; $g = 0.420; $b = 0.184; break;
			case 'darkorange':
				$r = 1.0;   $g = 0.549; $b = 0.0;   break;
			case 'darkorchid':
				$r = 0.6;   $g = 0.196; $b = 0.8;   break;
			case 'darkred':
				$r = 0.545; $g = 0.0;   $b = 0.0;   break;
			case 'darksalmon':
				$r = 0.914; $g = 0.588; $b = 0.478; break;
			case 'darkseagreen':
				$r = 0.561; $g = 0.737; $b = 0.561; break;
			case 'darkslateblue':
				$r = 0.282; $g = 0.239; $b = 0.545; break;
			case 'darkslategray':
				$r = 0.184; $g = 0.310; $b = 0.310; break;
			case 'darkturquoise':
				$r = 0.0;   $g = 0.808; $b = 0.820; break;
			case 'darkviolet':
				$r = 0.580; $g = 0.0;   $b = 0.827; break;
			case 'deeppink':
				$r = 1.0;   $g = 0.078; $b = 0.576; break;
			case 'deepskyblue':
				$r = 0.0;   $g = 0.749; $b = 1.0;   break;
			case 'dimgray':
				$r = 0.412; $g = 0.412; $b = 0.412; break;
			case 'dodgerblue':
				$r = 0.118; $g = 0.565; $b = 1.0;   break;
			case 'firebrick':
				$r = 0.698; $g = 0.133; $b = 0.133; break;
			case 'floralwhite':
				$r = 1.0;   $g = 0.980; $b = 0.941; break;
			case 'forestgreen':
				$r = 0.133; $g = 0.545; $b = 0.133; break;
			case 'gainsboro':
				$r = 0.863; $g = 0.863; $b = 0.863; break;
			case 'ghostwhite':
				$r = 0.973; $g = 0.973; $b = 1.0;   break;
			case 'gold':
				$r = 1.0;   $g = 0.843; $b = 0.0;   break;
			case 'goldenrod':
				$r = 0.855; $g = 0.647; $b = 0.125; break;
			case 'greenyellow':
				$r = 0.678; $g = 1.0;   $b = 0.184; break;
			case 'honeydew':
				$r = 0.941; $g = 1.0;   $b = 0.941; break;
			case 'hotpink':
				$r = 1.0;   $g = 0.412; $b = 0.706; break;
			case 'indianred':
				$r = 0.804; $g = 0.361; $b = 0.361; break;
			case 'indigo':
				$r = 0.294; $g = 0.0;   $b = 0.510; break;
			case 'ivory':
				$r = 1.0;   $g = 0.941; $b = 0.941; break;
			case 'khaki':
				$r = 0.941; $g = 0.902; $b = 0.549; break;
			case 'lavender':
				$r = 0.902; $g = 0.902; $b = 0.980; break;
			case 'lavenderblush':
				$r = 1.0;   $g = 0.941; $b = 0.961; break;
			case 'lawngreen':
				$r = 0.486; $g = 0.988; $b = 0.0;   break;
			case 'lemonchiffon':
				$r = 1.0;   $g = 0.980; $b = 0.804; break;
			case 'lightblue':
				$r = 0.678; $g = 0.847; $b = 0.902; break;
			case 'lightcoral':
				$r = 0.941; $g = 0.502; $b = 0.502; break;
			case 'lightcyan':
				$r = 0.878; $g = 1.0;   $b = 1.0;   break;
			case 'lightgoldenrodyellow':
				$r = 0.980; $g = 0.980; $b = 0.824; break;
			case 'lightgreen':
				$r = 0.565; $g = 0.933; $b = 0.565; break;
			case 'lightgrey':
				$r = 0.827; $g = 0.827; $b = 0.827; break;
			case 'lightpink':
				$r = 1.0;   $g = 0.714; $b = 0.757; break;
			case 'lightsalmon':
				$r = 1.0;   $g = 0.627; $b = 0.478; break;
			case 'lightseagreen':
				$r = 0.125; $g = 0.698; $b = 0.667; break;
			case 'lightskyblue':
				$r = 0.529; $g = 0.808; $b = 0.980; break;
			case 'lightslategray':
				$r = 0.467; $g = 0.533; $b = 0.6;   break;
			case 'lightsteelblue':
				$r = 0.690; $g = 0.769; $b = 0.871; break;
			case 'lightyellow':
				$r = 1.0;   $g = 1.0;   $b = 0.878; break;
			case 'limegreen':
				$r = 0.196; $g = 0.804; $b = 0.196; break;
			case 'linen':
				$r = 0.980; $g = 0.941; $b = 0.902; break;
			case 'magenta':
				$r = 1.0;   $g = 0.0;   $b = 1.0;   break;
			case 'mediumaquamarine':
				$r = 0.4;   $g = 0.804; $b = 0.667; break;
			case 'mediumblue':
				$r = 0.0;   $g = 0.0;   $b = 0.804; break;
			case 'mediumorchid':
				$r = 0.729; $g = 0.333; $b = 0.827; break;
			case 'mediumpurple':
				$r = 0.576; $g = 0.439; $b = 0.859; break;
			case 'mediumseagreen':
				$r = 0.235; $g = 0.702; $b = 0.443; break;
			case 'mediumslateblue':
				$r = 0.482; $g = 0.408; $b = 0.933; break;
			case 'mediumspringgreen':
				$r = 0.0;   $g = 0.980; $b = 0.604; break;
			case 'mediumturquoise':
				$r = 0.282; $g = 0.820; $b = 0.8;   break;
			case 'mediumvioletred':
				$r = 0.780; $g = 0.082; $b = 0.522; break;
			case 'midnightblue':
				$r = 0.098; $g = 0.098; $b = 0.439; break;
			case 'mintcream':
				$r = 0.961; $g = 1.0;   $b = 0.980; break;
			case 'mistyrose':
				$r = 1.0;   $g = 0.894; $b = 0.882; break;
			case 'moccasin':
				$r = 1.0;   $g = 0.894; $b = 0.710; break;
			case 'navajowhite':
				$r = 1.0;   $g = 0.871; $b = 0.678; break;
			case 'oldlace':
				$r = 0.992; $g = 0.961; $b = 0.902; break;
			case 'olivedrab':
				$r = 0.420; $g = 0.557; $b = 0.137; break;
			case 'orange':
				$r = 1.0;   $g = 0.647; $b = 0.0;   break;
			case 'orangered':
				$r = 1.0;   $g = 0.271; $b = 0.0;   break;
			case 'orchid':
				$r = 0.855; $g = 0.439; $b = 0.839; break;
			case 'palegoldenrod':
				$r = 0.933; $g = 0.910; $b = 0.667; break;
			case 'palegreen':
				$r = 0.596; $g = 0.984; $b = 0.596; break;
			case 'paleturquoise':
				$r = 0.686; $g = 0.933; $b = 0.933; break;
			case 'palevioletred':
				$r = 0.859; $g = 0.439; $b = 0.576; break;
			case 'papayawhip':
				$r = 1.0;   $g = 0.937; $b = 0.835; break;
			case 'peachpuff':
				$r = 1.0;   $g = 0.937; $b = 0.835; break;
			case 'peru':
				$r = 0.804; $g = 0.522; $b = 0.247; break;
			case 'pink':
				$r = 1.0;   $g = 0.753; $b = 0.796; break;
			case 'plum':
				$r = 0.867; $g = 0.627; $b = 0.867; break;
			case 'powderblue':
				$r = 0.690; $g = 0.878; $b = 0.902; break;
			case 'rosybrown':
				$r = 0.737; $g = 0.561; $b = 0.561; break;
			case 'royalblue':
				$r = 0.255; $g = 0.412; $b = 0.882; break;
			case 'saddlebrown':
				$r = 0.545; $g = 0.271; $b = 0.075; break;
			case 'salmon':
				$r = 0.980; $g = 0.502; $b = 0.447; break;
			case 'sandybrown':
				$r = 0.957; $g = 0.643; $b = 0.376; break;
			case 'seagreen':
				$r = 0.180; $g = 0.545; $b = 0.341; break;
			case 'seashell':
				$r = 1.0;   $g = 0.961; $b = 0.933; break;
			case 'sienna':
				$r = 0.627; $g = 0.322; $b = 0.176; break;
			case 'skyblue':
				$r = 0.529; $g = 0.808; $b = 0.922; break;
			case 'slateblue':
				$r = 0.416; $g = 0.353; $b = 0.804; break;
			case 'slategray':
				$r = 0.439; $g = 0.502; $b = 0.565; break;
			case 'snow':
				$r = 1.0;   $g = 0.980; $b = 0.980; break;
			case 'springgreen':
				$r = 0.0;   $g = 1.0;   $b = 0.498; break;
			case 'steelblue':
				$r = 0.275; $g = 0.510; $b = 0.706; break;
			case 'tan':
				$r = 0.824; $g = 0.706; $b = 0.549; break;
			case 'thistle':
				$r = 0.847; $g = 0.749; $b = 0.847; break;
			case 'tomato':
				$r = 0.992; $g = 0.388; $b = 0.278; break;
			case 'turquoise':
				$r = 0.251; $g = 0.878; $b = 0.816; break;
			case 'violet':
				$r = 0.933; $g = 0.510; $b = 0.933; break;
			case 'wheat':
				$r = 0.961; $g = 0.871; $b = 0.702; break;
			case 'whitesmoke':
				$r = 0.961; $g = 0.961; $b = 0.961; break;
			case 'yellowgreen':
				$r = 0.604; $g = 0.804; $b = 0.196; break;

			default:
				require_once 'Zend/Pdf/Exception.php';
				throw new Zend_Pdf_Exception('Unknown color name: ' . $color);
		}
		if (($r == $g) && ($g == $b)) {
			require_once 'Zend/Pdf/Color/GrayScale.php';
			return new Zend_Pdf_Color_GrayScale($r);
		} else {
			require_once 'Zend/Pdf/Color/Rgb.php';
			return new Zend_Pdf_Color_Rgb($r, $g, $b);
		}
	}
}
